Doctor insights on:
Can There Be A False Positive Pregnancy Test
When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more
Not likely: That is unlikely.Get a more detailed answer ›
Yes : Certain tumors produce HCG and these will produce a false-positive pregnancy test even in a man. A chemical pregnancy (in which the conception is lost very early) might be considered a false-positive. I trust the specimen is not contaminated. Good luck; i hope that whatever comes next is what you want. ...Read more
Ectopic Pregnancy: Positive.Get a more detailed answer ›
Depends: What test are you talking about? Blood test or urine test? A urine test is not likely to have a false positive if you follow the instructions carefully, including the time within which to read the result. There may be false negative result if you test too early of if the urine is too dilute. ...Read more
Nope.: The pregnancy test cannot tell where the pregnancy is implanted. It shows positive in both ectopic/tubal and normal pregnancies alike. The way to diagnose tubal pregnancy is by serial blood beta HCG levels and transvaginal sonography in expert hands. Take Folic Acid 1-5 mg daily and good luck! ...Read more
Big cause: is letting it sit out and reading it much later than it should have been read. ...Read more
Not usually: Never say never, but not usually. They are very sensitive and specific. ...Read more
False + pregn. tests: There is such a thing as a false positive urine pregnancy tests; there are lab errors; there a disorders of the liver, ovaries and other organs which can produce HCG or molecules similar to HCG; there are some molecules which may interfere with the pregnancy test performance or some reactives...False positive blood pregnancy tests may also occur but are much rarer. ...Read more
It's just random: Tests miss 5-10% of infections, more by urine, less by urethral or vaginal swab. Maybe other possibilities as well. Chlamydia clears on its own in a few weeks to months, so current testing is negative. Or s/he received an antibiotic for chlamydia (and didn't admit it) or for another infection, curing chlamydia or interfering with the test. Partner(s) of infected person need Rx, even w/ neg tests. ...Read more
See below: Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be positive a day before a missed period. Home pregnancy tests should be done 4-5 days after the missed period. A negative test done too early is not useful. ...Read more
Can a positive mono test result (not rapid one) be mistaken for a positive pregnancy test? Do they test for the same things?
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